Design and Manufacture of an Extrusion Die for Wood—Plastic Composite

Soury, Ehsan; Behravesh, Amir Hossein; Nasrabadi, H. G.; Zolfaghari, Abbas

doi:10.1177/0731684408089507

Cited by 15 publications

(12 citation statements)

References 2 publications

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“…12a) seem to be formed, but were not continuously produced. A similar but less severe effect was identified for ES 10 to ES 13 (Fig. 6), because this region was continuously extruded, despite showing a lower thickness than the required.…”

Section: Resultsmentioning

confidence: 54%

“…The main limitation of those approaches is related to the employed numerical modeling code that was based on structured meshes, thus limiting the range of geometries that can be studied. Soury et al [13] presented an optimization method similar to the one used in this work (a numerical-based trial-and-error procedure). Their work was oriented for the optimization of an extrusion die for the production of an I-shaped wood-plastic composite (WPC) profile.…”

Section: Introductionmentioning

confidence: 96%

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Design and optimization of an extrusion die for the production of wood-plastic composite profiles

et al. 2014

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In this work, the optimization of an extrusion die designed for the production of a wood-plastic composite (WPC) decking profile is investigated. The optimization was performed with the help of numerical tools, more precisely, by solving the continuity and momentum conservation equations that govern such flow, and aiming to balance properly the flow distribution at the extrusion die flow channel outlet. To capture the rheological behavior of the material, we used a Bird-Carreau model with parameters obtained from a fit to the (shear viscosity versus shearrate) experimental data, collected from rheological tests. To yield a balanced output flow, several numerical runs were performed by adjusting the flow restriction at different regions of the flow-channel parallel zone crosssection. The simulations were compared with the experimental results and an excellent qualitative agreement was obtained, allowing, in this way, to attain a good balancing of the output flow and emphasizing the advantages of using numerical tools to aid the design of profile extrusion dies. POLYM. ENG. SCI., 55:1849-1855, 2015

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Section: Resultsmentioning

confidence: 54%

Section: Introductionmentioning

confidence: 96%

Design and optimization of an extrusion die for the production of wood-plastic composite profiles

et al. 2014

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“…This, however, gives rise to the issue of flow balancing, namely that there is a need for a method to balance the flow regardless of the cross section geometry. It must be mentioned that the major consideration in flow balancing (or die balancing) is to assure that molten material exits the die with the same velocity at the all exit points .…”

Section: Problem Statementmentioning

confidence: 99%

“…Some major features of WPCs are low cost, ease of processing, dimensional stability, environmentally friendly, recyclability . A promising usage of these composites is in load bearing applications such as timbers in building sectors and pallets in handling and shipping sectors . On the other hand, while a higher wood content in WPCs is attractive due to lower material cost, it results in lower fracture toughness, lower strength, and a more catastrophic failure mode.…”

Section: Introductionmentioning

confidence: 99%

A modular extrusion die design to produce continuous glass fibers reinforced PVC‐wood composite profiles

2016

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This paper presents design and manufacture of a modular die to produce profiles of wood plastic composites (WPCs) reinforced with continuous glass fibers. As the strength and fracture toughness of WPCs are not convincing for load bearing applications, strengthening WPC profiles with continuous fibers could provide sufficient strength to meet the requirements. In this study, a modular profile die with various cross sections, i.e., I‐, U‐, and rectangular‐shaped was designed and manufactured. The approach to balance the flow for the various sections was to implement a flow restricting mechanism along the melt flow path. Impregnated glass rovings (IMGRs) were introduced continuously into the flow to reinforce the profiles through specially designed guides. Experimentations indicated the sound performance of the designed and implemented modular die. Three point bending tests were carried out to evaluate the flexural properties. Improvements in flexural strength and modulus were noticeable. The highest improvement in bending strength with four glass fibers was observed to be 23%, 38%, and 58% for I‐, U‐, and rectangular‐shaped profiles, respectively. POLYM. COMPOS., 39:2268–2276, 2018. © 2016 Society of Plastics Engineers

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“…WPCs sector has become one of the fastest growing polymeric composite industries in today's markets . The sustainability of WPCs in environmental and biological conditions is one main reason for their growth in global markets . In addition to their durability, low material cost and reusage and/or reprocess‐ability, are the other attractive advantages of these composites .…”

Section: Introductionmentioning

confidence: 99%

Procedure effect on the physical and mechanical properties of the extruded wood plastic composites

et al. 2013

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This article investigates the effect of raw material preparation on the mechanical and physical properties in wood‐plastic composite (WPC) production. Four possible procedures in material preparation to obtain a determined level of wood content are: (i) to use and feed raw materials in the same ratio of the desired composition (single stage), (ii) to use the batch of granules of the same composition (two‐stage), (iii) to add wood to the batch of granules having a lower wood content, (iv) to add polymer to the batch of granules having a higher wood content. The main question then is that, while it is economically attractive to use granules of a fixed wood content in all productions, whether there are noticeable differences in final properties of the products. The examined compositions were 50, 60, and 70 wt% of wood content which are considered as highly filled WPCs and mainly used in the WPC markets. Thus, 12 sets of WPC profiles were manufactured and the processing conditions (temperature, pressure, and outlet velocity) recorded. The flexural properties, impact strength, density, and water uptake were measured. Results revealed that in the production of WPCs with 50 and 70 wt% of wood content, using the WPC granules with the same composition yields better physical and mechanical properties. However, for producing WPC with 60 wt% of wood content, using WPC granules with 70 wt% of wood and adding appropriate amount of polymer exhibit better results. POLYM. COMPOS. 34:1349–1356, 2013. © 2013 Society of Plastics Engineers

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Design and Manufacture of an Extrusion Die for Wood—Plastic Composite

Cited by 15 publications

References 2 publications

Design and optimization of an extrusion die for the production of wood-plastic composite profiles

Design and optimization of an extrusion die for the production of wood-plastic composite profiles

A modular extrusion die design to produce continuous glass fibers reinforced PVC‐wood composite profiles

Procedure effect on the physical and mechanical properties of the extruded wood plastic composites

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